Abstract
We demonstrate a continuous-wave (CW) ultraviolet (UV) laser operating at 360 nm, achieved through intracavity frequency doubling of a Pr:YLF laser. This UV laser is more compact and simpler compared to previously reported designs, due to the adoption of a straight cavity. The total length of the laser system measures 75 mm, with a resonant cavity length of only 25 mm. By utilizing an InGaN laser diode (LD) emitting at 444 nm with a maximum incident power of 3.1 W, we were able to achieve a CW UV laser with an output power of 252 mW. The optical to optical conversion efficiency reached up to 8.1%, and the output power stability remained within ±1.9% over a period of two hours. This innovative UV laser has potential applications in various fields such as spectral analysis, material analysis, bioengineering, optoelectronic detection, and medical treatment.
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